| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.royale.compiler.internal.parsing.as; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.util.List; |
| |
| import antlr.ANTLRException; |
| import antlr.LLkParser; |
| import antlr.ParserSharedInputState; |
| import antlr.RecognitionException; |
| import antlr.Token; |
| import antlr.TokenBuffer; |
| import antlr.TokenStream; |
| import antlr.TokenStreamException; |
| |
| import org.apache.royale.compiler.asdoc.IASDocComment; |
| import org.apache.royale.compiler.asdoc.IMetadataParserASDocDelegate; |
| import org.apache.royale.compiler.internal.tree.as.IdentifierNode; |
| import org.apache.royale.compiler.internal.tree.as.metadata.BaseDefinitionMetaTagNode; |
| import org.apache.royale.compiler.internal.tree.as.metadata.MetaTagNode; |
| import org.apache.royale.compiler.internal.tree.as.metadata.MetaTagsNode; |
| import org.apache.royale.compiler.parsing.GenericTokenStream; |
| import org.apache.royale.compiler.parsing.IMetadataParser; |
| import org.apache.royale.compiler.tree.metadata.IMetaTagsNode; |
| |
| public class BaseMetaTagParser extends LLkParser implements IMetadataParser |
| { |
| protected IMetadataParserASDocDelegate asDocDelegate; |
| |
| public BaseMetaTagParser(int arg0) |
| { |
| super(arg0); |
| asDocDelegate = NilASDocDelegate.get().getASParserASDocDelegate().getMetadataParserASDocDelegate(); |
| } |
| |
| public BaseMetaTagParser(ParserSharedInputState arg0, int arg1) |
| { |
| super(arg0, arg1); |
| asDocDelegate = NilASDocDelegate.get().getASParserASDocDelegate().getMetadataParserASDocDelegate(); |
| } |
| |
| public BaseMetaTagParser(TokenBuffer arg0, int arg1) |
| { |
| super(arg0, arg1); |
| asDocDelegate = NilASDocDelegate.get().getASParserASDocDelegate().getMetadataParserASDocDelegate(); |
| } |
| |
| public BaseMetaTagParser(TokenStream arg0, int arg1) |
| { |
| super(arg0, arg1); |
| asDocDelegate = NilASDocDelegate.get().getASParserASDocDelegate().getMetadataParserASDocDelegate(); |
| } |
| |
| protected void handleComment(Token docToken) |
| { |
| asDocDelegate.setCurrentASDocToken(docToken); |
| } |
| |
| protected void resetComments(String name) |
| { |
| asDocDelegate.clearMetadataComment(name); |
| } |
| |
| protected void afterTag(MetaTagNode tag, Token openBrace, Token closeBrace, Token closeParen) throws TokenStreamException |
| { |
| if (tag != null && openBrace != null) |
| { |
| // ']' is the best match for 'end of a metadata'. |
| // ')' is the optional choice. |
| // 'LT(0)' is the last seen token, which is the fall back for terminating the metadata tag. |
| if (closeBrace != null) |
| tag.span(openBrace, closeBrace); |
| else if (closeParen != null) |
| tag.span(openBrace, closeParen); |
| else |
| tag.span(openBrace, LT(0)); |
| } |
| if (tag != null) |
| asDocDelegate.afterMetadata(tag.getAbsoluteEnd()); |
| } |
| |
| @Override |
| public void reportError(RecognitionException ex) |
| { |
| //Suppress errors for now |
| } |
| |
| protected final String getText(Token token) |
| { |
| return token != null ? token.getText() : ""; |
| } |
| |
| protected final IdentifierNode build(Token token) |
| { |
| IdentifierNode name = new IdentifierNode(getText(token)); |
| name.span(token); |
| return name; |
| } |
| |
| @Override |
| public IMetaTagsNode parse(Reader reader) |
| { |
| MetadataTokenizer tokenizer = new MetadataTokenizer(reader); |
| try |
| { |
| List<MetadataToken> tokens = tokenizer.parseTokens(); |
| MetaTagsNode node = new MetaTagsNode(); |
| new MetadataParser(new GenericTokenStream(tokens)).meta(node); |
| return node; |
| } |
| catch (ANTLRException e) |
| { |
| // ignore parser errors |
| return null; |
| } |
| finally |
| { |
| try |
| { |
| reader.close(); |
| } |
| catch (IOException e) |
| { |
| //do nothing |
| } |
| } |
| } |
| |
| /** |
| * Apply any comments to the metadata node passed in. Callers should ensure |
| * that the metadata type should have comments bound to it |
| * |
| * @param node the metadata to bind the comment to |
| */ |
| void applyComment(BaseDefinitionMetaTagNode node) |
| { |
| IASDocComment asDoc = asDocDelegate.afterDefinition(node); |
| if (asDoc != null) |
| node.setASDocComment(asDoc); |
| } |
| |
| public void setASDocDelegate(IMetadataParserASDocDelegate asDocDelegate) |
| { |
| this.asDocDelegate = asDocDelegate; |
| } |
| } |